JPH0223937Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a liquid fuel combustion device that has a lamp wick and a combustion tube and burns liquid fuel supplied from the lamp in the combustion tube.

[Technical background of the invention]

Conventionally, liquid fuel combustion devices, such as oil stoves, have a combustion tube consisting of an outer flame tube and an inner flame tube, each of which is formed in a porous shape, and a fuel tank containing petroleum (liquid fuel) in the lower part of the combustion tube. It is equipped with a cylindrical lamp wick that is impregnated, and when the wick is ignited by an ignition device or by hand, oil begins to burn in the ignition part of the wick located in the combustion tube, and the combustion flame is emitted. The oil spreads all around the upper end of the wick, and the natural suction of air used for combustion into the combustion tube becomes active, so that oil is evaporated and vaporized in the combustion tube and burned.

[Problems with background technology]

However, in the above-mentioned conventional lamp, the combustion flame gradually spreads throughout the wick centering around the ignition part, so the size of the combustion flame at the ignition part is larger than that of the combustion flame in other parts of the wick that spreads from this ignition part. Become bigger than size. Therefore, the temperature of the ignition part is high, and the temperature of other parts is lower than the ignition part.

Therefore, since the combustion flame is large, a large amount of the primary air drawn into the combustion tube flows to the ignition part where the temperature is high, and not much flows to other parts.

In this way, the primary air is concentrated in the ignition area. As a result, combustion in the ignition part is further promoted and the temperature becomes higher, so that the concentration of primary air in the same part also increases.

Therefore, the combustion flame becomes abnormally large in the above-mentioned ignition area, and becomes small in other areas, and due to this imbalance in the size of the combustion flame, black smoke and harmful gases such as carbon monoxide are generated. It happened often.

[Purpose of invention]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a liquid fuel combustion device that can prevent the generation of harmful gases such as black smoke and carbon monoxide with a simple configuration.

[Summary of the idea]

The present invention consists of a combustion tube that is rotatably mounted on a combustion tube holder and has an outer flame tube and an inner flame tube each having a porous shape, and a combustion tube that is provided at the lower part of the combustion tube and is impregnated with liquid fuel. A cylindrical lamp wick, a heat-sensitive deformable member provided near the wick that deforms by sensing combustion heat after ignition, and a large number of teeth on the outer periphery that mesh with small holes provided in the outer flame tube. It has a gear-like shape and a meshing member that rotates according to the deformation of the heat-sensitive deformable member, and the rotation of the meshing member causes the combustion tube to rotate along the combustion tube support. The combustion cylinder is equipped with a rotating mechanism, and is characterized in that the combustion cylinder is automatically rotated after ignition, thereby making it possible to make the combustion flame uniform.

[Example of idea]

An embodiment in which the present invention is applied to a kerosene stove will be described below with reference to the drawings. First, in FIG. 1, 1 is a base, 2 is a front plate provided at the front part of the base 1, and 3 is a fuel tank disposed on the base 1 with a slight upward separation, and the central part of the fuel tank 3 is A cylindrical portion 4 is formed in the cylindrical portion 4, and a heat shield plate 5 and a combustion tube support 6 are disposed at the upper end of the cylindrical portion 4. Reference numeral 7 denotes a combustion cylinder, which includes an outer cylinder 8 consisting of a metal cylinder 8a and a glass cylinder 8b connected to the top thereof, and a large number of small holes 9a arranged in the outer cylinder 8. an outer flame tube 9 formed with an outer flame tube 9, and an inner flame tube 10 disposed inside the outer flame tube 9 and formed with a large number of small holes 10a.
and a rectifying plate 11 provided at the upper end of this inner flame tube 10, and a cylinder body 8a and an outer flame tube 9.
The inner flame tube 10 is connected by connecting rods 12, 12. The combustion tube 7 is rotatably provided on the combustion tube support 6 with its outer flame tube 9 and inner flame tube 10 placed on the combustion tube support 6. In addition, 13
is a handle attached to the outer cylinder 8 of the combustion cylinder 7, and by lifting the handle 13, the entire combustion cylinder 7 is tilted and lifted. Reference numeral 14 denotes a cylindrical lamp wick, which is installed movably up and down on the inner peripheral surface of the fuel tank 3 located at the lower part of the combustion tube 7, and is impregnated with petroleum in the fuel tank 3. As is well known, this lamp wick 14 is moved up and down by rotating an adjustment knob 15.
When moved upward, the upper end of the wick 14 protrudes below the combustion tube 7 as shown in FIG. Now, in FIGS. 2 and 3, 16 is a bimetal which is a heat-sensitive deformable member, and this is a support 17 in the vicinity of the combustion tube 7 of the heat shield plate 5.
A connecting pin 18 is provided protruding from the tip thereof. The bimetal 16 has a straight shape at room temperature as shown by the solid line in FIG. 3, and deforms as shown by the chain double-dashed line when it senses the combustion heat of the combustion tube 7. Reference numeral 19 denotes a rotation mechanism, which includes a pinion-shaped engaging member 20 rotatably provided on the heat shield plate 5, and this engaging member 20.
and an arm 21 provided to rotate together with the meshing member 20, and a large number of teeth 20a are formed on the outer peripheral edge of the meshing member 20.
0a meshes with the small hole 9a of the outer flame tube 9 in the combustion tube 7. Further, a long hole 21a is formed at the tip of the arm 21, and in this long hole 21a,
The connecting pin 18 of the bimetal 16 is fitted.

Now, the operation of the above configuration will be explained. Now, as shown in FIG. 1, with the upper end of the lamp wick 14 protruding between the outer flame cylinder 9 and the inner flame cylinder 10, when a predetermined part of the upper end of the lamp wick 14 is ignited, the ignition part of the lamp wick 14 Petroleum, which is a liquid fuel, is combusted, and the combustion flame spreads all around the upper end of the wick 14, and the heat of the combustion flame causes air (hereinafter referred to as primary air) to flow into the fuel tank. The oil rises naturally through the cylinder part 4 of No. 3 and flows into the inner flame cylinder 10, and this primary air promotes the evaporation of oil in the lamp wick 14, and the combustion flame becomes larger and reaches a high temperature. become
The so-called chimney effect occurs due to the inflow of primary air, and air (hereinafter referred to as secondary air) is sucked in from below the lower end of the outer cylinder 8 and enters the small hole 9 of the outer flame cylinder 9.
It flows between the outer flame tube 9 and the inner flame tube 10 through A and rises, and in this way, due to the synergistic effect of the primary air and the secondary air, the evaporation of oil in the lamp wick 14 is further promoted and the amount of supplied air is increased. As a result, the above-mentioned combustion flame becomes hot around the entire circumference of the combustion tube 7.

By the way, at the beginning of such a combustion process, the bimetal 16 senses the heat of the combustion flame, that is, the combustion heat, and deforms as shown by the two-dot chain line in FIG. 3, and in response, the arm 21 rotates in the direction of arrow A. As a result, the engaging member 20 is rotated in the direction of arrow A, and thereby the outer flame tube 9, which is in a meshing relationship with the engaging member 20, is rotated along the combustion tube support 6 along with its combustion tube 7. As a result, the petroleum is completely combusted and the generation of harmful gases such as black smoke and carbon monoxide is prevented. That is, in general, in kerosene stoves, when the wick is ignited and the combustion flame spreads from the ignited part to the entire circumference, a relatively large part of the combustion flame may appear. Since the heat of combustion is relatively high, the primary air tends to gradually concentrate in that area, and the amount of oil evaporated in that area also increases, and the size of the combustion flame in that area becomes even larger. , black smoke and harmful gases are generated there. Therefore, in this embodiment, a bimetal 16 that deforms by sensing combustion heat is provided, and this bimetal 16
The combustion tube 7 is rotated slightly by the rotation mechanism 19 in accordance with the deformation of the combustion tube 7, and the size of the combustion flame in the lamp wick 14 is made uniform by the rotation of the combustion tube 7.

Specifically, due to the standing flame part formed in a part of the combustion flame, the part of the combustion tube 7 that is heated by this standing flame part becomes hotter than other parts, and the temperature also increases the temperature of the part. Intensive suction of primary air is promoted. However, since the combustion tube 7 is automatically rotated in the circumferential direction along the combustion tube support 6 based on the deformation of the bimetal as described above, the portion of the combustion tube 7 where the temperature is high is It is located above the part where the combustion flame is small, shifted from the rising flame part, and is also located so that the lower temperature part of the combustion tube 7 is heated by the rising flame part. Then, the amount of heat held in the high-temperature part of the misaligned combustion tube 7 promotes the suction of primary air into the downwardly opposing part where the combustion flame is small, activating combustion in this part. At the same time, since the part where the temperature of the combustion tube 7 is low is located in the rising flame part, the suction of primary air due to the temperature of the combustion tube 7 in this part is suppressed. As described above, together with the activation of combustion in areas other than the standing flame area, the balance of the flow of primary air with respect to the entire combustion flame is disrupted. Therefore, the concentration of primary air in the standing flame portion is alleviated, and the primary air is evenly supplied to the combustion flame in each part of the lamp wick 14, so that the size of the combustion flame in each part of the lamp wick 14 is uniform. be converted into As a result, it is possible to prevent the generation of black smoke and also to prevent the generation of harmful gases such as carbon monoxide, that is, it is possible to obtain a complete combustion state.

In particular, since the tooth portion 20a of the engaging member 20 is engaged with the small hole 9a of the outer flame tube 9, the outer flame tube 9
The small hole 9a that the combustion tube 7 originally has can be used for the rotation of the combustion tube 7, thereby simplifying the structure and reducing costs.

In the above embodiment, the engaging member 20 in the rotating mechanism 19 is formed in the shape of a pinion, but it may be formed in the shape of a sector gear.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without departing from the gist.

[Effect of idea]

As is clear from the above description, the present invention includes a combustion tube comprising an outer flame tube and an inner flame tube rotatably mounted on a combustion tube holder and each having a porous shape, and a lower part of the combustion tube. A cylindrical lamp wick impregnated with liquid fuel is provided in the lamp wick, a heat-sensitive deformable member is provided near the lamp wick and deforms by sensing combustion heat after ignition, and a heat-sensitive deformable member is engaged with a small hole provided in the outer flame tube. It has a gear-like shape with a large number of teeth on its outer periphery, and also has a meshing member that rotates according to the deformation of the heat-sensitive deformable member, and the rotation of the meshing member causes the combustion cylinder to be This is a liquid fuel combustion device that is equipped with a rotating mechanism that rotates along the tube support, and although it has a simple configuration, it can automatically equalize the combustion flame and reduce the amount of black smoke. This has the effect of preventing the generation of harmful gases such as carbon monoxide.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to a kerosene stove, in which FIG. 1 is a longitudinal cross-sectional side view of the whole, FIG. 2 is a perspective view of the main part, and FIG. 3 is a cross-sectional plan view of the main part. In the figure, 6 is a combustion tube receiver, 7 is a combustion tube, 9 is an outer flame tube, 10 is an inner flame tube, 14 is a lamp wick, 16 is a bimetal (heat-sensitive deformable member), 19 is a rotation mechanism, and 20 is a meshing member. It is.

Claims (1)

[Scope of utility model registration request] A combustion tube that is rotatably mounted on a combustion tube holder and has an outer flame tube and an inner flame tube each having a porous shape, and a cylindrical lamp wick that is provided at the lower part of the combustion tube and is impregnated with liquid fuel. A heat-sensitive deformable member is provided near the wick and deforms by sensing the combustion heat after ignition, and a gear is provided with a large number of teeth on the outer periphery that mesh with small holes provided in the outer flame tube. a rotating mechanism that has a meshing member that rotates in accordance with the deformation of the heat-sensitive deformable member, and rotates the combustion tube along the combustion tube support by rotation of the meshing member; A liquid fuel combustion device comprising: